<template>
    <div>
     <el-breadcrumb separator-class="el-icon-arrow-right">
  <el-breadcrumb-item :to="{ path: '/login' }">首页</el-breadcrumb-item>
  <el-breadcrumb-item>商品管理</el-breadcrumb-item>
  <el-breadcrumb-item>商品分类</el-breadcrumb-item>
</el-breadcrumb>
<el-card>
    <el-row>
        <el-col>
            <el-button type="primary" @click="tianjia">添加角色</el-button>
        </el-col>
        <tree-table :data="catelist" :columns="columns" :selection-type="false" :expand-type="false" show-index index-text="#" border :show-row-hover="false">
            <template #isok="scope">
             <i class="el-icon-success" v-if="scope.row.cat_deleted === false" style="color:lightgreen;"></i>
             <i class="el-icon-error" v-else style="color:red;"></i>
            </template>
            <template #order="scope">
                <el-tag size="mini" v-if="scope.row.cat_level===0">一级</el-tag>
                <el-tag size="mini" v-else-if="scope.row.cat_level===1" type="success">二级</el-tag>
                <el-tag size="mini" type="warning" v-else>三级</el-tag>
            </template>
            <template #opt="scope">
                <el-button type="primary" icon="el-icon-edit" size="mini" >编辑</el-button>
               <el-button type="danger" icon="el-icon-delete" size="mini" >删除</el-button>
            </template>
        </tree-table>
    </el-row>
    <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="querInfo.pagenum"
      :page-sizes="[1, 2, 5, 10]"
      :page-size="querInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total">
    </el-pagination>
</el-card>
<el-dialog
  title="添加分类"
  :visible.sync="addCateDialogVisible"
  width="60%" @close="addCateDialogClosed">
 <el-form :model="addCateForm" :rules="addCateFormRules" ref="addCateFormRef" label-width="100px">
  <el-form-item label="分类名称：" prop="cat_name">
    <el-input v-model="addCateForm.cat_name"></el-input>
  </el-form-item>
  <el-form-item label="父级分类：">
   <el-cascader
    expand-trigger="hover"
    :options="parentCateList"
    :props="cascaderprops"
    v-model="selectedKeys"
    @change="parentCateChanged" clearable change-on-select>
  </el-cascader>
  </el-form-item>
  </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="addCateDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addCate">确 定</el-button>
  </span>
</el-dialog>
    </div>
</template>
<script>
export default {
    data(){
        return{
            querInfo:{
                type:3,
                pagenum:1,
                pagesize:5
            },
            catelist:[],
            total:0,
            columns:[
                {
                    label:'分类名称',
                    prop:'cat_name'
                },
                {
                    label:'是否有效',
                    type:'template',
                    template:'isok'
                },
                {
                    label:'排序',
                    type:'template',
                    template:'order'
                },
                {
                    label:'操作',
                    type:'template',
                    template:'opt'
                }
            ],
            addCateDialogVisible:false,
            addCateForm:{
             cat_name:'',
             cat_pid:0,
             cat_level:0   
            },
            addCateFormRules:{
              cat_name:[
              { required: true, message: '请输入分类名称', trigger: 'blur' }
                  ]  
            },
            parentCateList:[],
            cascaderprops:{
                value:'cat_id',
                label:'cat_name',
                children:'children'
            },
            selectedKeys:[]
        }
    },
    created(){
        this.gteCateList()
    },
    methods:{
        async gteCateList(){
          const{data:res} = await this.$http.get('categories',{params:this.querInfo
            })
            if(res.meta.status !==200){
                return this.$mes.error('获取商品列表失败！')
            }
            console.log(res.date)
            this.catelist=res.data.result
            this.total=res.data.total
        },
        handleSizeChange(newSize){
            this.querInfo.pagesize = newSize
            this.gteCateList()
        },
        handleCurrentChange(newPage){
            this.querInfo.pagenum = newPage
            this.gteCateList()
        },
        tianjia(){
            this.getParentCateList()
            this.addCateDialogVisible=true
        },
        async getParentCateList(){
            const {data:res} = await this.$http.get('categories',{params: { type:2 }})
            if(res.meta.status!==200){
                return this.$mes.error('获取父级数据失败！')
            }
            console.log(res.data)
            this.parentCateList = res.data
        },
        parentCateChanged(){
            console.log(this.selectedKeys)
            if(this.selectedKeys.length > 0){
                this.addCateForm.cat_pid=this.selectedKeys[
                    this.selectedKeys.length - 1
                ]
                this.addCateForm.cat_level = this.selectedKeys.length
                return
            }
            else{
                this.addCateForm.cat_pid = 0
                this.addCateForm.cat_level = 0
            }
        },
        addCate(){
            this.$refs.addCateFormRef.validate(async valid =>{
                if(!valid)return
                const {data:res} = await this.$http.post('categories',this.addCateForm)
                if(res.meta.status!==201)
                {return this.$mes.error('添加分类失败！')}
                this.$mes.success('添加分类成功！')
                this.gteCateList()
            this.addCateDialogVisible=false
            })
        },
        addCateDialogClosed(){
            this.$refs.addCateFormRef.resetFields()
            this.selectedKeys = []
            this.addCateForm.cat_level = 0
            this.addCateForm.cat_pid = 0
        }
    }
    
}
</script>
<style lang="less" scoped>
.el-breadcrumb{
    font-size: 15px;
    line-height: 50px;
}
.el-button{
   margin-bottom: 8px;
}
.el-cascader{
    width: 100%;
}
</style>